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Author: Subject: Salicylic acid from acetylsalicylic acid
kt5000
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[*] posted on 1-5-2017 at 20:37
Salicylic acid from acetylsalicylic acid


Is it possible to convert acetylsalicylic acid back to salicylic acid? I have some nice recrystalized acetylsalicylic acid but would like to try the synthesis of methyl salicylate, which requires salicylic acid and methanol.

Or is there a way to make that esterification work with acetylsalicylic acid and methanol?

Thanks!
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DraconicAcid
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[*] posted on 1-5-2017 at 21:28


If you dissolve ASA in basic aqueous solution and boil it for a while, it should hydrolyze. Acidify to precipitate the acid.



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XeonTheMGPony
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[*] posted on 2-5-2017 at 03:52


have you ever considered checking out you tube allot of very good videos on this Nile red has a good one
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[*] posted on 2-5-2017 at 05:16


See the first post of this thread.



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kt5000
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[*] posted on 5-5-2017 at 23:19


Awesome stuff, thank you!
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[*] posted on 6-5-2017 at 10:31


Easy. Mix it with a large exess of water with about 7% hydrochloric acid and reflux for a half hour. Let it crystalize and vacuum filter it (you can use gravity filtration, but vacuum filtration is way faster and dries it)
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Nicodem
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